Is it possible to show tickets by geographic zone?

No, we do not restrict event campaigns by geographic zones. The event campaign is not geo-locked, by design.

We want to show the viewers all their ticket options, if they are traveling or want to get tickets for their friends and family living elsewhere. 
For example, if a buyer in USA would like to buy an event ticket for their family in India, they should have the option to visit the India event campaign page and purchase the tickets. 
Note: This is only to purchase the tickets.
(However, if the event is geo coded to be watched within a selected geographic zone, then the ticket will not be available to watch from outside the geographic zone.)